6XC v 6CM

Norma 6XC brass has 49.3 grains of H2O capacity
I believe Peterson 6XC brass is just slightly less, like 49.2
My Hornady 6.5 Creedmoor brass that I necked down to 6 Creed holds 52.1 grains of H2O
 
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Per the drawings, the creed is ever so slightly bigger. If someone tossed you either one with a covered headstamp, you probably couldnt pick which one it was without a side by side comparison. The XC neck is about .030 longer, shoulder is pushed back about the same amount(iirc) as compared to the Creed.
 
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Per the drawings, the creed is ever so slightly bigger. If someone tossed you either one with a covered headstamp, you probably couldnt pick which one it was without a side by side comparison. The XC neck is about .030 longer, shoulder is pushed back about the same amount(iirc) as compared to the Creed.

just what I needed. Thank you.